Actress Cobie Smulders arrives at The Museum of Television & Radio Annual Los Angeles Gala at the Beverly Hilton Hotel on November 7, 2005 in Beverly Hills, California. (Photo by Phil McCarten/Getty Images)

"Come On"- While Ted (Josh Radnor, pictured) makes one last attempt to win Robin's heart, Marshall and Lily are at odds, on the first season finale of HOW I MET YOUR MOTHER on the CBS Television Network. Photo: RON JAFFE/ CBS.

How I Met Your Mother Through The Years - Season 2

HIMYM Series Finale Airs on March 31, 2014

"Come On"- While Ted (Josh Radnor, pictured) makes one last attempt to win Robin's heart, Marshall and Lily are at odds, on the first season finale of HOW I MET YOUR MOTHER on the CBS Television Network. Photo: RON JAFFE/ CBS.

How I Met Your Mother Through The Years - Season 2

HIMYM Series Finale Airs on March 31, 2014

"Robin Sparkles" -- Cobie Smulders stars as Robin in HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Cliff Lipson/CBS

How I Met Your Mother Through The Years - Season 2

HIMYM Series Finale Airs on March 31, 2014

"Single Stamina" -- While Barney struggles with the fact that all of his friends have settled into the boring state of coupledom, his number one wingman, his gay, black brother James (played by guest star Wayne Brady), arrives on the scene, on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Robert Voets/CBS

"Slapsgiving" -- Ted (Josh Radnor) and Robin (Cobie Smulders) on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Monty Brinton/CBS

How I Met Your Mother Through The Years - Season 3

HIMYM Series Finale Airs on March 31, 2014

"Slapsgiving" -- Episodic coverage of the CBS series HOW I MET YOUR MOTHER, scheduled to air on the CBS Television Network. Photo: Monty Brinton/CBS

How I Met Your Mother Through The Years - Season 3

HIMYM Series Finale Airs on March 31, 2014

"Ten Sessions"--Continuing his passionate quest to find the woman who will one day be his wife, Ted (series star, Josh Radnor) pursues his beautiful dermatologist, Stella (guest star, Sarah Chalke). While Stella turns down his repeated efforts for a date, her office receptionist, Abby (guest star, Britney Spears) becomes smitten with Ted, on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Monty Brinton/CBS

How I Met Your Mother Through The Years - Season 3

HIMYM Series Finale Airs on March 31, 2014

"Sandcastles in the Sand" -- When Robin (Cobie Smulders) rekindles things with an old flame, James Van Der Beek ("Dawson's Creek") guest stars as Robin's first boyfriend Simon. He crushes Robin again, but Barney, in his own inimitable style, helps her realize that she is awesome, on HOW I MET YOUR MOTHER, on the CBS Television Network. Randy Tepper/CBS

How I Met Your Mother Through The Years - Season 4

HIMYM Series Finale Airs on March 31, 2014

"Woooo!" -- Robin (Cobie Smulders) rediscovers the "Woo Girls," a group of single girls who like to go out and party. Meanwhile, on HOW I MET YOUR MOTHER, on the CBS Television Network. Jamie-Lynn Sigler guest stars as Jillian. Photo: Karen Neal/Fox

How I Met Your Mother Through The Years - Season 5

HIMYM Series Finale Airs on March 31, 2014

"The Rough Patch"-- After Barney (Neil Patrick Harris) and Robin (Cobie Smulders) hit a rough patch in their relationship, Lily devises the perfect plan to break them up, calling in help from Robin's famous friend, Alan Thicke, on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Monty Brinton/CBS

"The Slutty Pumpkin Returns" -- Ted (Josh Radnor) and Naomi (Katie Holmes) revisit the rooftop Halloween party where they first met on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Monty Brinton/CBS

How I Met Your Mother Through The Years - Season 8

HIMYM Series Finale Airs on March 31, 2014

"The Final Page, Part One And Two" -- After years of uncertainty of where their relationship is going, Barney (Neil Patrick Harris) pops the question to Robin (Cobie Smulders) and she said yes on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Ron P. Jaffe/Fox

How I Met Your Mother Through The Years - Season 9

HIMYM Series Finale Airs on March 31, 2014

"The Locket" -- Lily (Alyson Hannigan, right) is the first of the gang to officially meet "The Mother," (Cristin Milioti, left) on the ninth and final season premiere of HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: Cliff Lipson/CBS

How I Met Your Mother Through The Years - Season 9

HIMYM Series Finale Airs on March 31, 2014

"The Lighthouse" Two years in the future, Ted (Josh Radnor, left) asks The Mother (Cristin Milioti, right) to marry him and she says yes, on HOW I MET YOUR MOTHER, on the CBS Television Network. Photo: CBS

How I Met Your Mother Through The Years - Season 9

HIMYM Series Finale Airs on March 31, 2014

"Last Forever Parts One and Two" Ted finally finishes telling his kids the story of how he met their mother, on the special one-hour series finale of HOW I MET YOUR MOTHER, Monday, March 31 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Josh Radnor as Ted, Cobie Smulders as Robin, Jason Segel as Marshall, Alyson Hannigan as Lily, and Neil Patrick Harris as Barney. Photo: Ron P. Jaffe/Fox